diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0854602..a579ca3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,7 +18,7 @@ jobs:
 
     steps:
     - name: checkout repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: setup python
       uses: actions/setup-python@v4
       with:
diff --git a/.github/workflows/pypi-publish.yml b/.github/workflows/pypi-publish.yml
index 8ecbb64..2effea5 100644
--- a/.github/workflows/pypi-publish.yml
+++ b/.github/workflows/pypi-publish.yml
@@ -11,7 +11,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: setup python
         uses: actions/setup-python@v4
         with: